Drill



Nov. 5, 1935. w. H. FURNESS DRILL Filed Aug. 15, 1934 2 Sheets-Sheet l INVENTOR ATTORNEYJ' Patented Nov. 5, 1935 UNITED STATES PATENT OFFICE DRILL William H. Furness, Riverton, N. J., assignor to American Rayon Co. Inc., Riverton, N. J., a corporation of New Jersey Application August 15, 1934, Serial No. 739,882

4 Claims.

the drive, provision must be made for spotting the various drills at any desired points, in consequence of which the drill press is quite complicated and expensive in construction and time consuming in adjustment.

The primary object of the present invention is to overcome these difliculties and to provide a multiple drill press of very simple construction in which, within the limits of the size of the particular press, the drills may be readily spotted at any desired point.

More particularly my invention contemplates an improved form of direct drive which enables the spotting of the drills as desired.

One embodiment of the invention by which the foregoing is utilized, is illustrated in the accompanying drawings, wherein- Figure 1 is a side elevation of a multiple drill press constructed in accordance with my invention.

Figure 2 is a fragmentary sectional view on an enlarged scale to show how the drills are mounted.

Figure 3 is a section taken on the line 3-3 of Figure 1.

Figure 4 is a fragmentary view corresponding to Figure 3 but illustrating the parts in a different position, and

Figure 5 is a fragmentary view showing certain other details of the invention.

Referring now to Figure 1, the press indicated as a Whole by the reference character A, may have the usual base or bed B, a supporting column C on which the drill head D is slidably mounted. The head is lowered toward the work on the table or raised therefrom by means of the threaded rods 1 operated in the usual manner.

In the head, and to one side of the column C, is mounted a drive shaft 8 driven by any desired form of gearing 9, the source of power for which may be an electric motor and a flexible drive shaft, not shown.

Secured to the lower end of the drive shaft 8 is a driving disk I!) having a plurality of parallel teeth H extending in a direction across the face thereof. Depending from the head are a plurality of arms l2 adapted to detachably receive a templet IS, the number of arms being sufficient to provide adequate annular support for the templet. The templet is provided with a plurality of apertures I 4 corresponding in number to the number of drills to be used with the apertures located opposite the points where the holes are to be drilled in the work. A driven shaft I5 is provided for each aperture and a detachable mounting i6 is provided for each drill 5 H, the mountings being adapted to interlock the shafts I5.

I Each shaft has a yoke I8 at its end into which is journaled a toothed wheel or roller i 9 the teeth of which mesh with the teeth of the disk 5 9. 10

When the templet is positioned in the arms the parts will assume the position shown in Figure 1 and the disk ID will impart a one-to-one rotary movement to each shaft I5 and of course to each drill I1, irrespective of the position of 15 the set of shafts IS with regard to the center of rotation of the disk. On inspection of Figures 3 and 4 it will be seen that as the disk i ll is rotated the angularity of its teeth ll changes and this,

in turn, effects a change in the angularity of the 20 wheels or rollers l 9, causing rotation of the shafts in the same direction as that of the disk. This is made possible by the rotation of the wheels about their own axis.

It will be seen from the foregoing that whenever a piece is to be drilled with differently spaced holes, a templet with properly positioned apertures is quickly substituted for a previous one and the parts assembled, when the press will again be ready for use. the drills may be spotted over practically the entire area of the disk, in any desired location with respect to the center of rotation thereof. The provision of interchangeable templets is only one Way of securing results as it will be seen that the drive is one which will adapt itself to a variety of simple means for effecting adjustment.

I claim:-

1. In a gang drill, a head movable toward and from the work, a drive shaft, a disc thereon provided with parallel teeth extending in a direction across a fiat face thereof, a plurality of driven shafts rotatably mounted with their axes parallel to the axes of the drive shaft, each shaft having a toothed wheel or roller journaled at an end 5 thereof and the shafts being so positioned relative to the disc that the toothed wheels engage the teeth of the disc, and drills carried by the shafts said toothed wheels or rollers constituting means for imparting the rotative movement of the disc to the shafts in one to one ratio.

2. In a gang drill, a head movable toward and from the work, a drive shaft, a disc thereon provided with parallel teeth extending in a direction across a flat face thereof, a plurality of driven It will be noted that shafts rotatably mounted with their axes parallel to the axis of the drive shaft, each shaft having a toothed wheel or roller journaled at an end thereof for rotation on an axis parallel to the toothed face of said disc and adapted to engage the teeth of the disc, drills carried by the shafts, and means whereby the driven shafts are adjustable over the face of the disc said toothed Wheels or rollers constituting means for imparting the rotative movement of the disc to the shafts in one to one ratio.

3. In a gang drill, a head movable toward and from the work, a drive shaft, a disc thereon provided with parallel teeth extending in a direction across a flat face thereof, a plurality of driven shafts rotatably mounted with their axes parallel to the axis of the drive shaft, each shaft having a toothed Wheel or roller journaled at an end thereof for rotation on an axis parallel to the toothed face of said disc and adapted to engage the teeth of the disc, drills carried by the shafts,

and a removable templet for housing the shafts and adapted to receive drills said toothed wheels or rollers constituting means for imparting the rotative movement of the disc to the shafts in one to one ratio.

4. In a gang drill, a head movable toward and from the work, a drive shaft, a disc secured to said shaft, said disc having parallel teeth extending across a flat face thereof, a plurality of driven shafts, a detachable support for said driven shafts carried by said head, bearings in said support for mounting said driven shafts for rotation on axes parallel to the axis of the drive shaft, a toothed wheel journaled in each driven shaft for rotation on an axis parallel to the toothed face of the disc and in mesh with the teeth of the disc, a plurality of drill holders rotatably mounted in said support in alignment with the driven shafts, and means connecting said driven shafts and drill holders for rotation together.

WILLIAM H. FURNESS. 

